A running gag from the Doraemon series which involves Nobi Nobita using various future gadgets borrowed from his friend Doraemon in an attempt to impress his crush Minamoto Shizuka. Nobita would often end up humiliating Shizuka by exposing her nude body or her panties, accidentally or not. This often resulted in Shizuka uttering the phase "You're a pervert, Nobita!"
A similar gag stipulated that whenever Shizuka attempts to take a bath or shower, no matter where, when, or how, Nobita will invariably be involved in some way. For example, if she is at home, Nobita will use Doraemon's "Anywhere Door" to walk in on her. Nobita walking in on her in the bath is another common plot, especially if he is using some form of new gadget.
This has become a plot point throughout the series' multi-decade run; in at least one instance she needed to find Nobita (who was lost). To do so, she went skinny dipping -- within minutes, Nobita ended up nearby by coincidence.
